Answer:
The 90% confidence interval would be narrower than a 95% confidence interval
Step-by-step explanation:
From the question we are told that
The 95% confidence interval is 0.69 to 0.91.
Generally the width of a confidence interval is dependent on the margin of error
Generally the margin of error is mathematically represented as
[tex]E = Z_{\frac{\alpha }{2} } * \frac{\sigma }{\sqrt{n} }[/tex]
Here we see that
[tex]E \ \ \alpha \ \ Z_{\frac{\alpha }{2} } [/tex]
Here [tex]Z_{\frac{\alpha }{2} } [/tex] is the critical value of half of the level of significance .
This value increase as the value of confidence level increase and vise versa
So for 90% confidence interval , the confidence level is 90% , hence the value of [tex]Z_{\frac{\alpha }{2} } [/tex] will decrease which will in turn decrease the value of E , hence the width of the interval will reduce
So the 90% confidence interval is narrower than a 95% confidence interval when the sample proportion or sample mean is constant
Three friends are selling items at an arts and crafts fair. Kim makes $45.75 selling jewelry. Mark makes 100 times as much as Kim selling his custom picture frames. Carlos makes one tenth of the money Mark makes selling paintings. How much money does each friend make?
Answer:
mark is making $4,575, Carlos is makeing 457.50
Pls help!!! What is this expression in simplified form?
Answer:
My guess would be D
Step-by-step explanation:
Sam earns $54 275 in a year.
He pays no income tax on the first $8200.
He pays 18% income tax on everything he earns over $8200.
a Work out how much income tax he pays.
b Work out what percentage of his income he pays in tax.
If the income tax rate is increased to 21%, how much more tax will Sam pay?
Answer:
he would pay $8,293.5 in income tax.
b:
Step-by-step explanation: he pays 15.280515891294% of his pay in tax. if the income rate was increased to 21% then he would pay 9,675.75 in taxes. Which is 1,382.25 more than 18% tax.
What is the constant rate???
Answer:
The constant rate is 4
Step-by-step explanation:
40 ÷ 10 = 4
80 ÷ 20 = 4
120 ÷ 30 = 4
160 ÷ 40 = 4
They all equal 4 so that is the constant rate.
Brainliest???
Mrs. Healy has two dogs rocky and chino. rocky eats 2 dog treats each day and Chino eats 5 each day. How many treats do the dogs eat in 4 days?
Answer:
28 treats
Step-by-step explanation:
2x4
5x4
20+8=28
Answer:
the answer is 28 treats in 4 days for both dogs
Step-by-step explanation:
2*4=8+ 5*4=20= all together 28 treats for 2 dogs
hope this helped
9x - y power two - 20 ≥ 0 i need every passage
Answer: photo
Step-by-step explanation:
I am not sure but hope it helps
The weight of one ticket is approximately 1.67 × 10-4 g. Write the numerical value without scientific notation.
Answer:
0.000167 g
Step-by-step explanation:
[tex]1.67 \times {10}^{ - 4} \: g\\ \\ = 0.000167 \: g[/tex]
HELP ASAP LAST QUESTION
Answer:
-9.63
Step-by-step explanation:
-√92.75=
-9.63
Could I get help with this one?
Answer:
x3
Step-by-step explanation:
evaluate 8 times (2-3) to the 2 power divided by 4
Answer:
Step-by-step explanation
I need this for sis!:D I will give thanks!
what is the y intercept y=-4x-5
Answer:
The y-intercept y = 4x - 5 is (0,-5).
Step-by-step explanation:
hope this helps
have a great day
plz consider marking brainliest
Alaina is making a birdseed mix with 2 1/3 lb sunflower seeds, 5/6 lb cracked corn, and 1/6 lb peanuts. How much cracked corn does Alaina need to make 5 lb of birdseed mix? Show your work.
Answer:1.25
Step-by-step explanation:
If you add everything it makes 3 and 1/3 pounds you want 5
If you divide 5 by 3 and 1/3 it's 1.5
Then you just need to multiply 5/6 by 1.5
For making 5 lb birdseed mix 1 ¹/₄ lb cracked corn will be used.
What is proportion ?
A proportion is an equation based on the equality of two ratios.
Here it is given that :
Alaina is making a birdseed mix with 2 1/3 lb sunflower seeds, 5/6 lb cracked corn, and 1/6 lb peanuts.
adding everything to make birdseed mix = 2 1/3 + 5/6 + 1/6 =10/3 lb
Now,
for making 10/3 lb birdseed mix = 5/6 lb cracked corn is used
in other words :
for making 1 lb birdseed mix = (5/6) x (3/10) lb cracked corn is used
that is , for making 5 lb birdseed mix = (5/6) x (3/10) x 5 lb cracked corn will be used.
= 15/12 = 5/4 = 1 ¹/₄ lb cracked corn will be used.
Therefore, for making 5 lb birdseed mix 1 ¹/₄ lb cracked corn will be used.
Read more about ratio at:
https://brainly.com/question/17869111
#SPJ2
Use the elimination method to solve the system of equations. Choose the correct ordered pair.
2x-5y=2
3x+2y=-16
Answer: (-4, -2)
Step-by-step explanation:
just took the test and got this right! :-)
The temperature in Minsk was recorded over a period of four hours. The
equation
y = -5x + 54
describes the temperature over this time, where y is the temperature in
degrees Fahrenheit (°F) and x is the number of hours since measurements
started. Which of the following statements correctly describes the
temperature?
A. It was -5°F after four hours, and it is rising by 54 degrees per
hour.
B. It was 54°F when the temperature was first measured, and it is
dropping by 5 degrees per hour.
c. It was -5°F when the temperature was first measured, and it is
rising by 54 degrees per hour.
O D. It was 54°F after four hours, and it is dropping by 5 degrees per
hour
Answer:
D.) it was 54 degrees Fahrenheit when the temperature was first measured, and it is dropping by 5 degrees per hour
Step-by-step explanation:
I took the quiz
Answer:
D
Step-by-step explanation:
I took the test
-1/4 ÷ -3/8
Please Hurry
Answer:
2 /3 (decimal form ≅ 0.6666667 )
Step-by-step explanation:
Unary minus: -1 /4
= -1 /4
Unary minus: -3 /8
= -3 /8
Divide: the result of step No. 1 : the result of step No. 2 = -1 /4 : (-3 /8 ) =
-1 /4 x -8 /3 = -1 (-8) divided by 4(3) = 8 /12 = 4(2 ) divided by 4(3) = 2 /3
Match each equation to the situation it represents
1st one says Leilah
2nd one says Stetson
Answer:
leiah has not yet studied...... = 2400 - 40x = 600
stetson rests studios spaces...... = 40x - 600 = 2400
a kit contains.... =. (600 + 40) x = 2400
Step-by-step explanation:
that might make it a bit easier
What’s the common factor for 72 and 84
Answer:
Step-by-step explanation:
This is the general method for doing this problem. First factor these numbers into primes.
72: 2 * 2 * 2 * 3 * 3
84: 2*2 * 3 * 7
Now each number has at least two 2s
Each number has at least one 3
The highest common factor is 2 * 2 * 3 = 12
PLEASE HELP!!!!!!!!!!!!!!!
Answer:
Blue
blue with a hint of orange
1)
An ice machine uses 3 gallons of water every 9 hours. How many gallons of water does it use each hour? How many
hours does it take to use one gallon?
A)
B)
gallon per hour, 1 hour
gallon per hour, 3 hours
3 gallons per hour, 5 hour
gallon per hour,
1 hour
D
Answer:
B
Step-by-step explanation:An ice machine uses 3 gallons of water every 9 hours. How many gallons of water does it use each hour? How many
hours does it take to use one gallon?
A)
b)
gallon per hour, 1 hour
gallon per hour, 3 hours
3 gallons per hour, 5 hour
gallon per hour,
1 hour
D
Factor the following expression using the GCF.
8dr – 24r
r(8d – 24)
4r(2d – 6)
8(dr – 3r)
8r(d – 3)
Answer:
the answer to your question is 8r(d-3)
hope this helps :-)
-15= x/-0.5 8= what does x equal
The difference of a number and 6 is the same as 5 times the sum of the number and 2. What is the number?
A. -4
B.-2
C.-1
D. 1
Answer:
n = -4
Step-by-step explanation:
You must write and solve a symbolic equation.
n - 6 = 5(n + 2), or
n - 6 = 5n + 10
Combining like terms, we get:
-16 = 4n,
and so n = -4
Answer:
A. -4
Step-by-step explanation:
Order the set of integers from least to greatest 5, -3, -12, 9
Answer:
-12, -3, 5, 9
Step-by-step explanation:
ok. So the numbers are 5, -3, -12, and 9.
In these numbers, there are 2 negatives. They are -12 and -3.
In negatives, the bigger the number is, the number is smaller.
So we first put
-12, -3 as our 2 first. Then the other ones are 5 and 9.
and you obviously know that 5 is less than 9. try it out. 9-5 =4 which is positive
So then you put 5, 9
And our full answer is
-12, -3, 5, 9
PRE-CALC
khalid invests $500 in an account that earns 1.5% interest per year, compounded annually. Which of the following is formed by the amount in his account from year to year?
an arithmetic series
an arithmetic sequence
a geometric series
a geometric sequence
For your question: "Khalid invests $500 in an account that earns 1.5% interest per year, compounded annually. Which of the following is
formed by the amount in his account from year to year?"
The geometric sequence is formed.
Answer:
d
Step-by-step explanation:
Use this scenario to answer questions 3-4: Peter was a waiter that was paid at a rate of $8 per hour plus tips. He earned a total of $200 including $54 in tips.
Given the scenario above, write an equation to represent the scenario. Let h = the number of hours
Free brainliest included! :)
Identify the slope from the table
NEED HELP PLEASE thank you sb
Answer:
-4
Step-by-step explanation:
‘X’ adds by one while ‘y’ adds by -4
horizontal distance of 10 feet and rice 3 feet. Find the length of the ramp.
Answer:
Step-by-step explanation:
Tye length of the ramp can be gotten using Pythagoras theorem.
Horizontal distance = 10ft.
Vertical distance = 3ft
Length of the ramp² = 10²+3²
Length of the ramp² = 100+9
Length of the ramp² = 109
L² = 109
L =√109
L = 10.44ft
Hence the length of the ramp is 10.4ft to the nearest tenth
The two figures shown are congruent. Which statement is true?
Answer:reflection image of the other
Source:trust me bro
solve the following inequality showing all steps -3n+7<4
[tex]\textsf{Hey there!}[/tex]
[tex]\mathsf{-3n + 7 < 4}\\\\\textsf{SUBTRACT by 7 on your sides}\\\mathsf{-3n+7-7<4-7}\\\mathsf{Cancel\ out: 7-7\ because\ that\ gives\ you\ 0}\\\mathsf{Keep: 4-7\ because\ it\ helps\ us\ solve\ for\ our\ n \ value}\\\bf{{\mathsf{4-7= -3}}}\\\\\mathsf{New\ question: -3n<-3}\\\\\mathsf{DIVIDE\ both\ sides\ by\ -3}\\\mathsf{\dfrac{-3n}{-3}=\dfrac{-3}{-3}}\\\mathsf{Cancel\ out: \dfrac{-3}{-3} \ because\ gives\ us\ 1}\\\mathsf{Keep: \dfrac{-3}{-3}\ because\ it\ gives\ us\ our\ n\ value}[/tex]
[tex]\mathsf{New\ equation: n < \dfrac{-3}{-3}}\\\mathsf{\dfrac{-3}{-3} = -3\div-3 \rightarrow 1}\\\\\huge\textsf{Answer}\huge\downarrow\\\\\boxed{\boxed{\mathsf{Answer: n < 1}}}\checkmark\\\\\\\\\textsf{Good luck on your assignment and enjoy your day!}\\\\\dfrac{\frak{LoveYourselfFirst}}{:)}[/tex]